方格纸上的变换
Transformations on a Grid
能够使用恰当的语言识别、描述和表示一个图形经过反射或平移后的位置；知道图形本身没有改变。
Identify, describe, and represent the position of a shape following a reflection or translation using appropriate language; know that the shape has not changed
学习证据 / Evidence
- 在坐标网格中沿一条竖直对称轴反射一个三角形，并说出新位置的坐标
- 将一个图形向右平移3个单位、向上平移2个单位，并描述这个移动过程
- 解释反射或平移后的图形与原图形全等
- Reflect a triangle in a vertical mirror line on a coordinate grid and state the new coordinates
- Translate a shape 3 units right and 2 units up and describe the movement
- Explain that a reflected/translated shape is congruent to the original
评估问题 / Assessment
如果{{name}}在方格纸上滑动或翻转一个图形，他们能准确描述图形最终的位置，并确认图形本身的大小和角度都没有改变吗？
If {{name}} slides or flips a shape on squared paper, can they describe exactly where it ends up and confirm the shape itself hasn't changed size or angles?